SkyUI
Immersive armors
Hoth
XCE Xenius Character Enhancements
The unofficial patches for skyrim (and DLC if you have them)
MWR Millenia weapon retex
Alternate Start Live another life
Personally I use Classic classes and birthsigns

Skyui
SMM
Monster Wars
Apocalypse
Ishs souls to perks
Deadly dragons
Moonpath
Flyable broomstick
Community weapon mod
Pirates loot
Personally I run 3 to 4 times this many must have mods.... I won't list them all.